The median ratios of C5AR1, CLEC4A and NLRP3 expression in CD3+ of non-malignant pulmonary diseases were 0.01 [range 0–0.02, p = 0.12], 0.02 [range 0.01–0.08, p = 0.42] and 0.13 [range 0.07–0.22, p = 0.14], respectively. Here, C5AR1 is linked to lung disorder.